A2 Biology Photosynthesis

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the 3 light dependent reactions
photophosphorylation, photolysis, production of reduced NADP
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An important enzyme used to combine CO2 with a 5carbon acceptor molecule
Rubisco ( Ribulose Bisphosphate Carboxylase)
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both reactions occur where?
in the chloroplasts
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the light dependent reaction occur in the?
thylakoid
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the light independent reaction occurs in the?
stroma
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the master pigment is called
Chlorophyll A
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2 types of chlorophyll A?
P680 and P700
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Examples of accessory pigments?
Xanthophyll and Chlorophyll B
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The 2 chlorophylls and their accessory pigments are called?
Photosystem 1 and photosystem 2
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Products of the light dependent reaction?
ATP, reduced NADP
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Autotroph
organisms that make organic molecules from inorganic molecules
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Heterotroph
rely on other organisms from whom they feed or digest their organic molecules
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what is photolysis
the energy from excited chlorophyll A splits water into protons, electrons and oxygen
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what is photophosphorylation
energy from excited chlorophyll A's electrons is used to create ATP
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another name for the light independent reaction?
calvin cycle
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Process of calvin cycle
CO2 + ribulose bisphosphate - gylcerate-3-phosphate - triose phosphate - either glucose or ribulose phosphate
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Variables influencing photosynthesis
availability of water, light intensity, wavelength of light and temperature
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Action Spectra
shows how active the pigments included in photosynthesis are at wavelengths
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Absorption Spectra
shows what light is absorbed and reflected
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what is non-cyclic photophosohorylation
photosynthesis is usually non-cyclic - electrons pass on one direction from PS2 to PS1
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what is cyclic photophosphorylation
if a plant needs to make morr ATP, the electrons can pass back to PS2 at the end of the ETC
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Card 2

Front

An important enzyme used to combine CO2 with a 5carbon acceptor molecule

Back

Rubisco ( Ribulose Bisphosphate Carboxylase)

Card 3

Front

both reactions occur where?

Back

Preview of the front of card 3

Card 4

Front

the light dependent reaction occur in the?

Back

Preview of the front of card 4

Card 5

Front

the light independent reaction occurs in the?

Back

Preview of the front of card 5
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